/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.flowable.bpmn.converter.parser;

import javax.xml.stream.XMLStreamReader;

import org.apache.commons.lang3.StringUtils;
import org.flowable.bpmn.constants.BpmnXMLConstants;
import org.flowable.bpmn.converter.util.BpmnXMLUtil;
import org.flowable.bpmn.model.BpmnModel;
import org.flowable.bpmn.model.ItemDefinition;

/**
 * @author Tijs Rademakers
 */
public class ItemDefinitionParser implements BpmnXMLConstants {

    public void parse(XMLStreamReader xtr, BpmnModel model) throws Exception {
        if (StringUtils.isNotEmpty(xtr.getAttributeValue(null, ATTRIBUTE_ID))) {
            String itemDefinitionId = model.getTargetNamespace() + ":" + xtr.getAttributeValue(null, ATTRIBUTE_ID);
            String structureRef = xtr.getAttributeValue(null, ATTRIBUTE_STRUCTURE_REF);
            if (StringUtils.isNotEmpty(structureRef)) {
                ItemDefinition item = new ItemDefinition();
                item.setId(itemDefinitionId);
                BpmnXMLUtil.addXMLLocation(item, xtr);

                int indexOfP = structureRef.indexOf(':');
                if (indexOfP != -1) {
                    String prefix = structureRef.substring(0, indexOfP);
                    String resolvedNamespace = model.getNamespace(prefix);
                    structureRef = resolvedNamespace + ":" + structureRef.substring(indexOfP + 1);
                } else {
                    structureRef = model.getTargetNamespace() + ":" + structureRef;
                }

                item.setStructureRef(structureRef);
                item.setItemKind(xtr.getAttributeValue(null, ATTRIBUTE_ITEM_KIND));
                BpmnXMLUtil.parseChildElements(ELEMENT_ITEM_DEFINITION, item, xtr, model);
                model.addItemDefinition(itemDefinitionId, item);
            }
        }
    }
}
